PSU Green Building Internship Final Presentation, 2018 ...

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Campus Sustainability Office Publications, Reports and Presentations Campus Sustainability Office

2018

PSU Green Building Internship Final Presentation, PSU Green Building Internship Final Presentation,

2018: Karl Miller Center Post-Occupancy Study 2018: Karl Miller Center Post-Occupancy Study

Omar Abu Sulaiman Portland State University

Jocelyn Reynolds Portland State University

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Citation Details Citation Details Sulaiman, Omar Abu and Reynolds, Jocelyn, "PSU Green Building Internship Final Presentation, 2018: Karl Miller Center Post-Occupancy Study" (2018). Campus Sustainability Office Publications, Reports and Presentations. 10. https://pdxscholar.library.pdx.edu/campus_sustainability_pub/10

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Karl Miller Center Post-Occupancy StudyGreen Building Internship 2018

Omar Abu Sulaiman + Jocelyn Reynolds

KMC Background

Originally built in 1979

2017 remodel includes:

● Renovated 6-story building (mechanical + HVAC)

● Central glass atrium for circulation, ventilation, gathering

● Brand new 5-story passive classroom pavilion classrooms

. Kyhetica Lattin

Passive Ventilation Design

Source: KMC Design Intent

● Pre-Renovation EUI = 63 kBtu/gsf/year

● New Design = 25 kBtu/gsf/year

(lowest on campus)

● Actual EUI = 24 kBtu/gsf/year

EUI Distribution

Intent of Study

Determine if the mechanical and passive design strategies in the KMC are functioning properly to provide appropriate levels of thermal comfort to occupants.

*Per ASHRAE Standard 55, a building is providing appropriate levels of comfort if at least 80% of occupants are neutral/satisfied in the spaces.

Data Collection + Procedures

1. Anonymous, 7 question paper survey

2. Wall-mounted Siemens Sensors:○ Indoor Air Temp (F)○ CO2 levels (ppm)

3. Wall Mounted Onset HOBO Sensors○ Indoor Air Temp (F)○ CO2 levels (ppm)

4. Handheld Infrared Thermometer○ Concrete floor slab temps in Pavilion

classrooms + Atrium

Survey Data● 6 survey sets● 5 different Renovated classrooms ● 110 students

KMC 470 7/18 1:30pm

Sensor Data

Hobo U12 Data Logger

*Avg temp. difference between SIEMENS and HOBO = 1.6F

Onset HOBO U12SIEMENS

QMX3. P34/P74

Radiant Floor - Eastern Atrium Eastern Atrium

Western Atrium Sensor Data (cont’d)

● On average, the Western Atrium was 7F warmer than the Eastern Atrium

Research Goals1. Determine the effectiveness of the night flush procedure in Pavilion classrooms. Track concrete slab temperatures.

2. Identify trends between the location, count and type of complaints.

3. Determine summer course suitability in Pavilion classrooms. (13 possible rooms)

4. Compare comfort levels in Renovated + Pavilion classrooms.

5. Compare comfort levels with IAT + CO2 in surveyed classrooms.

6. Compare Interior vs. Perimeter classroom comfort levels. (245/275 vs 560/470/255)

7. Correlate total population comfort levels with thermal perception.

8. Find survey trends between gender and thermal comfort levels.

Research Goal 2: Identify trends between the location, count and reason for complaints.

● Surprisingly, only 10% of complaints were from the Pavilion

● 44% of Renovated complaints = perimeter rooms (p)

● 56% of Renovated complaints = interior rooms (i)

● 71% of complaints = Too Hot

● 25% of complaints = Too Cold

KMC Pavilion Count Reason Date

380 p 1 Noisy Fan 05/04/18

495 p 1 Too Hot 04/10/18

580 p 1 Fan not working + Too hot 05/08/18

KMC Renovated Count Reason Date

255 p 2 A/C not working. Too hot. 08/28/17

230 i 2 Too cold 12/13/17

262 p 1 Too cold 06/12/17

220 i 1 Too cold 12/11/17

245 i 2 Too hot 05/31/18

318 i 1 Too hot 11/07/17

310 i 3 Too hot 03/07/18

465 p 1 Too hot 02/01/17

405 i 1 Too hot 07/05/18

560 p 1 Too hot 05/31/18

570 p 1 Too cold 06/12/18

660C i 1 Too hot 10/11/16

610 (E through K) p 1 Too cold 12/13/17

610C p 1 Too cold 12/13/17

650 i 2 Too hot 10/10/16

605 i 1 Too hot 06/18/18

660 p 1 Too hot 02/19/18

630B p 1 Too hot 02/19/18

630C p 1 Too hot 02/20/18

Sources of Complaints:

Research Goal 4: Compare comfort levels in Renovated + Pavilion classrooms.

OVERALL COMMENTS“Temperature varies significantly between rooms”

“It’s really cool I like it”

“Rooms w/ too many windows are likely to be hot”

PAVILION COMMENTS“Good for winter”

“The classes in pavilion are always hot”

“A can heat up crazy fast”

RENOVATED COMMENTS“I would rather the room be cooler than warmer”

“Easier to concentrate in a cooled classroom”

“Some rooms are very cold”

Renovated vs. Pavilion Preference

Research Goal 4: Compare comfort levels in Renovated + Pavilion classrooms.

Research Goal 8: Find survey trends between gender and thermal comfort levels.

Research Goals 4 and 5: Compare comfort levels with IAT + CO2 in surveyed Renovated classrooms.

Research Goal 7: Correlate total population comfort levels with thermal perception.

Outer Circle: Inner Circle:

Research Goal 7: Correlate total population comfort levels with thermal perception.

Research Goal 1: Determine the effectiveness of the night flush procedure in Pavilion classrooms.

Research Goal 1: Determine the effectiveness of the night flush procedure in Pavilion classrooms.

7/16/18 4pm to

7/17/18 9am

8/9/18 4:30pm to

8/10/18 9am

Outside Air Temperature From Previous Evening to Next Morning (F) 95 to 69 94 to 70

Average Decrease in Pavilion Slab Temperatures (F) 0.94 1.62

Percent Change 72%

Concrete Slab Temperatures Before and After Successful Night Purge

Research Goal 3: Determine Summer Course Suitability in Pavilion Classrooms

Research Goal 3: Determine Summer Course Suitability in Pavilion Classrooms

Research Goal 3: Determine Summer Course Suitability in Pavilion Classrooms

Number of Overheating Days above 75F

Recommendations● More occupant education about the passive ventilation features in the Pavilion classrooms is needed.

● Increase thermostat temperature on warmer months by 1-2F to prevent overcooling (Renovated)

● Decrease thermostat temperature on colder months by 1-2F to prevent overheating (Renovated)

● Increase the airflow in KMC Room 275 to reduce PPM and IAT due to a high level of discomfort.

● Hold summer classes in 180 and 185

● Depending on summer class performances of 180 and 185, 285 and 295 could hold summer classes

● No summer classes on Floors 3, 4 and 5

QUESTIONS / COMMENTS